Diabetes mellitus (DM) is one of the most prevalent endocrine disorders in children, which afflicts about one out of every 300 to 500 children under eighteen years of age (
1,
2). The annual incidence of DM is 3.7 cases in every 100000 people in Iran. This statistics varies from one to 35 cases in every 100000 people under the age of 14 worldwide (
3). Diabeticpatients are hospitalized in hospitals as 2.4 times high as the patients with other diseases while in children this ratio is as 5.3 times high as their counterparts (
4). DM accounts for over 20%of mortalities in Iran (
5). The high rate of mortality, complications, and economic costs as well as social and personal burdens of DM indicate the urgent need to support diabetic patients in disease control (
6). Treatment objectives in diabetic patients include monitoring blood glucose levels and preventing acute problems in the long run. The treatment consists of five strategies including nutritional treatment, exercise training, monitoring and control of blood glucose, medication therapy, and education (
7). Treatment and management of DM depend on patients’ behavior as promoted self-care leads to better blood glucose control and health improvement; however, many diabetic patients fail to provide adequate self-care, which leads to insufficient or absence of blood glucose control because they do not closely adhere to the recommendations provided by medical professionals (
6). Despite considerable budgets allocated to the prevention and control of DM, the number of diabetic patients and their complications are increasing. The main reason may be poor self-care as DM requires specific lifetime self-care behavior (
8). Nurses, as the individuals responsible to provide training and consultation to children with DM and their families, need to recognize all aspects of DM including its effects and control measures (
9). Based on studies excessive self-care autonomy increased with age and demonstrated less favorable treatment adherence (
10). There are fundamental differences in DM self-care between pediatric and adult patients. Young children do not have the cognitive ability to master DM management, and adolescents often do not possess the emotional maturity to sustain the tasks of daily therapy (
11).